diff --git a/app/MindWork AI Studio/Components/Settings/SettingsPanelApp.razor b/app/MindWork AI Studio/Components/Settings/SettingsPanelApp.razor
index cbc6e281..58e9e828 100644
--- a/app/MindWork AI Studio/Components/Settings/SettingsPanelApp.razor	
+++ b/app/MindWork AI Studio/Components/Settings/SettingsPanelApp.razor	
@@ -28,5 +28,5 @@
     }
 
     <ConfigurationProviderSelection Component="Components.APP_SETTINGS" Data="@this.AvailableLLMProvidersFunc()" SelectedValue="@(() => this.SettingsManager.ConfigurationData.App.PreselectedProvider)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.App.PreselectedProvider = selectedValue)" HelpText="@(() => T("Would you like to set one provider as the default for the entire app? When you configure a different provider for an assistant, it will always take precedence."))"/>
-    <ConfigurationSelect OptionDescription="@T("Preselect one of your profiles?")" SelectedValue="@(() => this.SettingsManager.ConfigurationData.App.PreselectedProfile)" Data="@ConfigurationSelectDataFactory.GetProfilesData(this.SettingsManager.ConfigurationData.Profiles)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.App.PreselectedProfile = selectedValue)" OptionHelp="@T("Would you like to set one of your profiles as the default for the entire app? When you configure a different profile for an assistant, it will always take precedence.")"/>
+    <ConfigurationSelect OptionDescription="@T("Preselect one of your profiles?")" SelectedValue="@(() => this.SettingsManager.ConfigurationData.App.PreselectedProfile)" Data="@ConfigurationSelectDataFactory.GetProfilesData(this.SettingsManager.ConfigurationData.Profiles)" SelectionUpdate="@(selectedValue => this.SettingsManager.ConfigurationData.App.PreselectedProfile = selectedValue)" OptionHelp="@T("Would you like to set one of your profiles as the default for the entire app? When you configure a different profile for an assistant, it will always take precedence.")" IsLocked="() => ManagedConfiguration.TryGet(x => x.App, x => x.PreselectedProfile, out var meta) && meta.IsLocked"/>
 </ExpansionPanel>
\ No newline at end of file
diff --git a/app/MindWork AI Studio/Plugins/configuration/plugin.lua b/app/MindWork AI Studio/Plugins/configuration/plugin.lua
index 61cd572c..77797c51 100644
--- a/app/MindWork AI Studio/Plugins/configuration/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/configuration/plugin.lua	
@@ -95,6 +95,13 @@ CONFIG["SETTINGS"] = {}
 -- Examples are PRE_WRITER_MODE_2024, PRE_RAG_2024, PRE_DOCUMENT_ANALYSIS_2025.
 -- CONFIG["SETTINGS"]["DataApp.EnabledPreviewFeatures"] = { "PRE_RAG_2024", "PRE_DOCUMENT_ANALYSIS_2025" }
 
+-- Configure the preselected profile.
+-- It must be one of the profile IDs defined in CONFIG["PROFILES"].
+-- Be aware that the ID must be using the same casing as defined in the profile.
+-- When the ID is using upper case letters, but using lower case letters in this
+-- setting, the preselection will not work.
+-- CONFIG["SETTINGS"]["DataApp.PreselectedProfile"] = "00000000-0000-0000-0000-000000000000"
+
 -- Example chat templates for this configuration:
 CONFIG["CHAT_TEMPLATES"] = {}
 
diff --git a/app/MindWork AI Studio/Settings/DataModel/DataApp.cs b/app/MindWork AI Studio/Settings/DataModel/DataApp.cs
index a09f8324..a6029cda 100644
--- a/app/MindWork AI Studio/Settings/DataModel/DataApp.cs	
+++ b/app/MindWork AI Studio/Settings/DataModel/DataApp.cs	
@@ -70,7 +70,7 @@ public sealed class DataApp(Expression<Func<Data, DataApp>>? configSelection = n
     /// <summary>
     /// Should we preselect a profile for the entire app?
     /// </summary>
-    public string PreselectedProfile { get; set; } = string.Empty;
+    public string PreselectedProfile { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedProfile, string.Empty);
     
     /// <summary>
     /// Should we preselect a chat template for the entire app?
diff --git a/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs b/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs
index 05da10fe..979a626a 100644
--- a/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs	
+++ b/app/MindWork AI Studio/Tools/PluginSystem/PluginConfiguration.cs	
@@ -76,6 +76,9 @@ public sealed class PluginConfiguration(bool isInternal, LuaState state, PluginT
         // Handle configured profiles:
         PluginConfigurationObject.TryParse(PluginConfigurationObjectType.PROFILE, x => x.Profiles, x => x.NextProfileNum, mainTable, this.Id, ref this.configObjects, dryRun);
         
+        // Config: preselected profile?
+        ManagedConfiguration.TryProcessConfiguration(x => x.App, x => x.PreselectedProfile, this.Id, settingsTable, dryRun);
+        
         message = string.Empty;
         return true;
     }
diff --git a/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs b/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs
index 9df176cd..8990d499 100644
--- a/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs	
+++ b/app/MindWork AI Studio/Tools/PluginSystem/PluginFactory.Loading.cs	
@@ -141,6 +141,10 @@ public static partial class PluginFactory
         if(PluginConfigurationObject.CleanLeftOverConfigurationObjects(PluginConfigurationObjectType.PROFILE, x => x.Profiles, AVAILABLE_PLUGINS, configObjectList))
             wasConfigurationChanged = true;
         
+        // Check for a preselected profile:
+        if(ManagedConfiguration.IsConfigurationLeftOver(x => x.App, x => x.PreselectedProfile, AVAILABLE_PLUGINS))
+            wasConfigurationChanged = true;
+        
         // Check for the update interval:
         if(ManagedConfiguration.IsConfigurationLeftOver(x => x.App, x => x.UpdateInterval, AVAILABLE_PLUGINS))
             wasConfigurationChanged = true;